<template>
  <div>
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>

      <!-- 角色列表区域 -->
      <el-table :data="rolelist" border stripe>
          <!-- 展开列 -->
          <el-table-column type="expand">
              <template slot-scope="scope">
                <el-row :class="['bdbottom',li===0?'bdtop':'','vcenter']" v-for="(item1,li) in scope.row.children" :key="item1.id">
                    <el-col :span="5">
                        <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                        <i class="el-icon-caret-right"></i>
                    </el-col>
                    <el-col :span="19">
                        <!-- 通过循环渲染2权限 -->
                        <el-row :class="[l2===0?'':'bdtop','vcenter']" v-for="(item2,l2) in item1.children" :key="item2.id">
                            <el-col :span="6">
                                <el-tag closable @close="removeRightById(scope.row,item2.id)" type="success">{{item2.authName}}</el-tag>
                        <i class="el-icon-caret-right"></i>
                            </el-col>
                            <el-col :span="18">
                              <el-tag closable @close="removeRightById(scope.row,item3.id)"
                              type="warning" v-for="item3 in item2.children" :key="item3.id">{{item3.authName}}</el-tag>
                            </el-col>
                        </el-row>
                    </el-col>
                </el-row>
                <!-- <pre>
                    {{scope.row}}
                </pre> -->
              </template>
          </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="450px">
          <template slot-scope="scope">
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
            >编辑</el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
            >删除</el-button>
            <el-tooltip
              effect="dark"
              content="分配权限"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini" @click="showSetRightDialog(scope.row)"
              >分配权限</el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
  <!-- 分配权限对话框 -->
  <el-dialog
      title="分配权限"
      :visible.sync="setRightDialoggVisibale"
      width="50%">
      <el-tree :data="rightslist" :props="treeProps" show-checkbox node-key="id" 
      default-expand-all :default-checked-keys="defKeys" ref="TreeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
      <el-button @click="setRightDialoggVisibale = false">取 消</el-button>
      <el-button type="primary"  @click="allotRights"
          >确 定</el-button
      >
      </span>
  </el-dialog>

  </div>
</template>

<script>
export default {
  data() {
    return {
      // 所有角色列表数据
      rolelist: [],
      setRightDialoggVisibale : false,
      rightslist:[],
      treeProps:{
        label:'authName',
        children:'children'
      },
      defKeys:[],
      roleId:''
    }
  },

  created() {
    this.getRoleList()
  },
  methods: {
    async getRoleList() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      // console.log(res)
      this.rolelist = res.data
      // console.log(this.rolelist)
    },

    // 根据ID删除对应权限
    async removeRightById(role,rightId){
      const confirmResult =  await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)

        if(confirmResult !=='confirm'){
          return this.$message.info('取消删除')
        }
        // console.log(role,rightId)
        const {data:res}=await this.$http.delete(`roles/${role.id}/rights/${rightId}`)

        if(res.meta.status!==200){
          return this.$message.error('删除失败')
        }
        this.$message.success('删除成功')
        // this.getRoleList()
        role.children = res.data

    },

    async showSetRightDialog(role){
      this.roleId = role.id
      const {data:res} = await this.$http.get('rights/tree')
      
      if(res.meta.status !==200){
        return this.$message.error('获取权限数据失败')
      }
      // 获取到的权限数据保存到data中
      this.rightslist = res.data
      // console.log(this.rightslist)
      this.defKeys=[]
      this.getLeadfKeys(role,this.defKeys)
      this.setRightDialoggVisibale = true
    },

    // 获取角色下所有角色Id
    getLeadfKeys(node,arr){
      if(!node.children){
        return arr.push(node.id)
      }
      node.children.forEach(item=>
      this.getLeadfKeys(item,arr))
    },

    async allotRights(){
      const keys = [
        ...this.$refs.TreeRef.getCheckedKeys(),
        ...this.$refs.TreeRef.getHalfCheckedKeys()
      ]
      // console.log(keys)
      const idStr = keys.join(',')
      const {data:res} = await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
      if(res.meta.status !==200){
        return this.$message.error('保存失败')
      }
      this.$message.success('分配成功')
      this.getRoleList()
      this.setRightDialoggVisibale = false
    }
  },
}
</script>

<style lang="less" scoped>
.el-tag{
    margin: 7px;
}
.bdtop{
    border-top: 1px solid #eee;
}
.bdbottom{
    border-bottom: 1px solid #eee;
}

.vcenter {
  display: flex;
  align-items: center;
}
</style>